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(No Moniek) C. D. HUGHES.

DOORl BELL. 321,5o Patented u1-yf?, 1885,

Urirrnn @rains 'niet lDOOR-BELL.

PECEPEGATION forming part of Letters Patent No. 321,501, dated July 7, 1885.

Application led May 12, 1884. (No model.)

To all whom it may concern:

Be it known that I, CHARLES D. HUGHES, a resident of the city of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Devices for Operating Bells and Gongs, of which the following is a specification.

My invention relates more especially to the devices for sounding that class of signals which are operated directly and mechanically by a wire or cord-such, for instance, as the ordinary door bell or gong.

I am aware that heretofore a lever has been attached to the winding-shaft of an ordinary clock-movement; but the prolongation of the vibration of the bell or gong in such case has necessarily been limited, since the lever can only move the winding-shaft a portion of a revolution each stroke.

The object of my invention is to cause the bell or gong to vibrate for a prescribed length of time after each pull of the cord or Wire, more or less, according to the relative arrangement of the parts, but in any ease to positively and continuously actuate the bell or gong a number of times without further trouble to the operator.

My invention consists in the special construction' and arrangement of the parts for vi brating the hammer, in combination with a rack-bar operated in one direction by the bell pull and in the opposite direction by a retractile spring, and in making the stroke of the said actuating rack-bar adjustable, substantially in the manner and for the purpose described.

In the accompanying drawings, Figure 1 is an elevation of a device embodying my improvements; Fig. 2, a side elevation of the ringing mechanism; Fig. 3, a similar view showing aslightly-modied construction, and

'Fig 4 a detail view showing the relative arrangement of the spindle and windlass.

The pull77 cord orwire Aextends to and is connected with the door-casing, or is arranged in other desired situation in the ordinary manner. lis inner end, a, is connected, either directly or indirectly, with a retractile spring, B, which tends to constantly preserve the normal relation of the parts. There secured directly to the spring, as indicated in Fig. 3, the upper portion of the cord or pull is first wound several times around the barrel or win dlass C, mounted upon the spindle D; or, as shown in the other figures, the inner end of the pull may be attached to a rack-bar, E, capable of longitudinal motion, and connected directly with the retractile spring B, thebarrelor Windlass C in such case being provided with pinion-teeth o, which engage with the rack-teeth e. ln either ease it will be observed that the barrel or \vindlass,being free to turn in either direction upon its axis,will be rotated by both the outward movement of the pull caused by the operator, and by the inward or retractile movement caused by the spring B. Connection is made between the spindle D and the Windlass O by a pawl and ratchet, c d, which allow the Windlass to turn freely upon the spindle during the outward movement of the pull A, but cause the spindle D and Windlass Cto revolve together in the opposite direction during the retractile action of the spring B. The spindle D is provided with a toothed disk or wheel, F, the teethor projections upon which act successively upon the shorter arm, g, of the hammenlever G, which is provided with the hammer-head d', and is pivoted in such relation to the bell or gong H that during its oscillations its head d will strike the latter.

In the drawings, the shorter arm g of the hammer-lever G is formed so as to constitute, with the disk F, an eseapement-movc ment similar to those used in clock-Works; but this construction, thongh convenient and preferable, is not indispensable, since any construction that will cause the hammerlever to oseillate a number of times during the whole or a partial revolution of the disk will accomplish the same result. It it is desired to still further extend the time through which the bell or gong may be actuated by a single movement of the pull, the windlass and spindle may, respectively, be mounted upon separate axes, and suitable gears may be interposed cet-Ween them for the purpose, in the manner well known in clock-Works, Snc.

It is obvious that a weight may be substituted for the retractile spring, if preferred, with like effect.

IOU

v of holes, s s, in the rack-bar E, into any one of which the stop p may be inserted, its eontact with a stationary part of the apparatus limiting the extent of motion of the bar. It

is obvious that the same result may be attained in a variety of ways, an adjustable stop being capable of arrangement upon either the movable or stationary part of the device.

-What I claim as my invention, and desireto `iecure by Letters Patent, is-

In a device for-prolonging the vibration of. a bell or gong, substantially such as designated, the reciprocating raclebar actuated in one direction by the bell-pull and in the opposite direction by a retractile spring, and engaging with and rotating a pinion upon the spindle to which the hammer-vibrator is attached, substantially in the manner and for the purpose described.

2. In` combination with a bell or gong, a device for oscillating its actuatinghammer, interposed between such hammer and the pull wire or cord, and adapted to receive and store the energy imparted to the latter when drawn outward and to operate the bell or gong during the retractile movement of the parts, the parts being made relatively adjustable for the purpose of regulating the extent of motion, substantially in the manner and for the purpose described.

GHAS. D. HUGHES. Witnesses:

IVM. GARDNER, GEO. WV. MLyr'r. 

